MAXA i-HPV5H 0140, Manual

Page: 18 / 36

Controllo per i-HPV5
Chillers and Inverter Air/Water heat pumps with axial fan
18
Resource Parameter Terminal block
Factory configuration
Description
Default
value
Function
D04E
H89
XPE-4.1/4.2 31 *Sistem season indication Voltage output 230Vac, 50Hz, 2A (AC1)
D05E
H90
XPE-5.1/5.2 25
Double setpoint / 3-way valve for
radiant panels
Voltage output 230Vac, 50Hz, 2A (AC1)
For a detailed description of the terminal block, please refer to the user/installer manual.
(*) only for heat pump units
19. DOUBLE SET-POINT
This function introduces a second working set-point on the plant side, both in cooling, heating and sanitary mode.
The user terminal board allows a consent to be connected to switch from the first to the second set-point and configured at digital input DI9 with
parameter H60 = 26. The valve,on the other hand, is connected in the terminal board to digital output DO5E and is configured via parameter H90.
Parameter VALUE Function
H60
26 Call for second set-point
H90
25 3-way valve for radiant panels
H129
0 Function disabled
1 Function configured but not active
2 Enabled only in cooling mode
3 Enabled only in heating mode
4 Enabled in cooling and heating mode
19.1 SILENCED VENTILATION
Configuring a digital input DI9E with parameter H63=25 it is possible to manage the function of silent ventilation management.
Parameter VALUE Function
H63
0 (default) Function disbled
25
Open contact -> standard mode
Close contact -> silenced mode
With the function active, the noise, output and power of the unit are limited, for additional information see the installer user manual.
20. PARTIAL RECOVERY WITH DESUPERHEATER (IF DS ACCESSORY IS PRESENT)
This option allows to produce free hot water through partial heat recovery by desuperheating the gas from the compressor outlet. Units with
DS accessory are equipped with a control expansion board, which allows the connection of a water temperature probe for DS to activate the call
for recovery.
To enable operation, the following parameters must be set and the DS water temperature probe must be connected to terminal XC-121.1/12.2
Parameter VALUE TERMINAL Function
rE01
1 DS enabled in chiller mode
H17
6 XC-121.1/12.2 DS water temperature sensor
Recovery is enabled for operation if all the following conditions are met:
• Compressor in operation.
• Defrosting is not in progress and is not counting to enter defrost mode.
• There are no safety controls or restrictions active.
The recovery call is activated if the temperature detected by the probe falls below the setpoint San – 4,0 °C and is deactivated when the tem -
perature exceeds the setpoint San .
For more information see the technical bulletin of the unit.
NOTE: The partial recovery function does not activate if a defrost is in progress or if the countdown to enter defrost is in prog -
ress.
21. AUXILIARY RESISTANCES
As an alternative to the alarm/block and defrost functions, it is possible to activate integration devices.
In some system solutions, it may be necessary to use an integration resistor for the system and/or the domestic hot water system. This is an